DRb - queue starvation?

I think I’ve run into some kind of queue starvation bug w/ DRb - it
normally
takes minutes per item to process items in the queue, and normally the
queue
has a bit of a backlog. But when it’s empty (nothing coming in), it
seems
to stop checking for new work.

Has anyone else run into this w/ DRb?

Any suggestions for debugging this?

Thanks,

m